Table B
Regression coefficients relating time outdoors to measures of physical health, by sex and period of day, household population aged 7 to 14, Canada excluding territories, 2012/2013
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| Period of day and measure of physical health | Total (n = 1,159) | Boys (n = 596) | Girls (n = 563) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| b | 95% confidence interval | p | b | 95% confidence interval | p | b | 95% confidence interval | p | ||||
| from | to | from | to | from | to | |||||||
| Before school | ||||||||||||
| Log of body mass index (BMI) (kg/m2) | 0.00 | 0.00 | 0.00 | 0.55 | 0.00 | 0.00 | 0.00 | 0.33 | 0.00 | 0.00 | 0.00 | 0.80 |
| Log of waist circumference (cm) | 0.00 | 0.00 | 0.00 | 0.71 | 0.00 | 0.00 | 0.00 | 0.89 | 0.00 | 0.00 | 0.00 | 0.14 |
| Log of grip strength (kg) | 0.00 | 0.00 | 0.00 | 0.42 | 0.00 | 0.00 | 0.00 | 0.77 | 0.00 | 0.00 | 0.00 | 0.64 |
| Systolic blood pressure (mmHg) | 0.02 | -0.07 | 0.12 | 0.62 | 0.03 | -0.08 | 0.14 | 0.56 | 0.01 | -0.10 | 0.13 | 0.82 |
| Diastolic blood pressure (mmHg) | 0.00 | -0.08 | 0.08 | 0.96 | 0.01 | -0.10 | 0.12 | 0.85 | -0.01 | -0.12 | 0.09 | 0.81 |
| High-density lipoprotein (HDL) cholesterol (mmol/L) | 0.00 | -0.01 | 0.00 | 0.34 | 0.00 | 0.00 | 0.00 | 0.43 | 0.00 | -0.01 | 0.00 | 0.29 |
| Total cholesterol (mmol/L) | 0.00 | -0.01 | 0.00 | 0.51 | -0.01 | -0.01 | 0.00 | 0.10 | 0.00 | -0.01 | 0.01 | 0.73 |
| Log of total cholesterol/HDL | 0.00 | 0.00 | 0.00 | 0.11 | 0.00 | 0.00 | 0.00 | 0.09 | 0.00 | 0.00 | 0.00 | 0.36 |
| Glycohemoglobin (%) | 0.00 | 0.00 | 0.00 | 0.15 | 0.00 | 0.00 | 0.00 | 0.75 | 0.00 | 0.00 | 0.00 | 0.04 |
| At school | ||||||||||||
| Log of body mass index (BMI) (kg/m2) | 0.00 | 0.00 | 0.00 | 0.68 | 0.00 | 0.00 | 0.00 | 0.37 | 0.00 | 0.00 | 0.00 | 0.39 |
| Log of waist circumference (cm) | 0.00 | 0.00 | 0.00 | 0.62 | 0.00 | 0.00 | 0.00 | 0.30 | 0.00 | 0.00 | 0.00 | 0.44 |
| Log of grip strength (kg) | 0.00 | 0.00 | 0.00 | 0.04 | 0.00 | 0.00 | 0.00 | 0.56 | 0.00 | 0.00 | 0.00 | 0.02 |
| Systolic blood pressure (mmHg) | -0.01 | -0.03 | 0.02 | 0.48 | 0.01 | -0.02 | 0.04 | 0.58 | -0.02 | -0.07 | 0.03 | 0.36 |
| Diastolic blood pressure (mmHg) | -0.01 | -0.04 | 0.02 | 0.56 | 0.01 | -0.02 | 0.04 | 0.52 | -0.02 | -0.07 | 0.02 | 0.25 |
| High-density lipoprotein (HDL) cholesterol (mmol/L) | 0.00 | 0.00 | 0.00 | 0.98 | 0.00 | 0.00 | 0.00 | 0.84 | 0.00 | 0.00 | 0.00 | 0.89 |
| Total cholesterol (mmol/L) | 0.00 | 0.00 | 0.00 | 0.12 | 0.00 | 0.00 | 0.00 | 0.44 | 0.00 | -0.01 | 0.00 | 0.10 |
| Log of total cholesterol/HDL | 0.00 | 0.00 | 0.00 | 0.18 | 0.00 | 0.00 | 0.00 | 0.62 | 0.00 | 0.00 | 0.00 | 0.19 |
| Glycohemoglobin (%) | 0.00 | 0.00 | 0.00 | 0.34 | 0.00 | 0.00 | 0.00 | 0.50 | 0.00 | 0.00 | 0.00 | 0.55 |
| After school | ||||||||||||
| Log of body mass index (BMI) (kg/m2) | 0.00 | 0.00 | 0.00 | 0.42 | 0.00 | 0.00 | 0.00 | 0.21 | 0.00 | 0.00 | 0.00 | 0.37 |
| Log of waist circumference (cm) | 0.00 | 0.00 | 0.00 | 0.68 | 0.00 | 0.00 | 0.00 | 0.30 | 0.00 | 0.00 | 0.00 | 0.11 |
| Log of grip strength (kg) | 0.00 | 0.00 | 0.00 | 0.89 | 0.00 | 0.00 | 0.00 | 0.38 | 0.00 | 0.00 | 0.00 | 0.55 |
| Systolic blood pressure (mmHg) | 0.00 | -0.02 | 0.02 | 0.67 | 0.00 | -0.03 | 0.02 | 0.72 | 0.01 | -0.02 | 0.03 | 0.47 |
| Diastolic blood pressure (mmHg) | 0.01 | -0.01 | 0.02 | 0.54 | 0.01 | -0.03 | 0.03 | 0.98 | 0.01 | -0.01 | 0.03 | 0.38 |
| High-density lipoprotein (HDL) cholesterol (mmol/L) | 0.00 | 0.00 | 0.00 | 0.60 | 0.00 | 0.00 | 0.00 | 0.56 | 0.00 | 0.00 | 0.00 | 0.35 |
| Total cholesterol (mmol/L) | 0.00 | 0.00 | 0.00 | 0.70 | 0.00 | 0.00 | 0.00 | 0.92 | 0.00 | 0.00 | 0.00 | 0.41 |
| Log of total cholesterol/HDL | 0.00 | 0.00 | 0.00 | 0.85 | 0.00 | 0.00 | 0.00 | 0.53 | 0.00 | 0.00 | 0.00 | 0.86 |
| Glycohemoglobin (%) | 0.00 | 0.00 | 0.00 | 0.92 | 0.00 | 0.00 | 0.00 | 0.78 | 0.00 | 0.00 | 0.00 | 0.75 |
| After dinner | ||||||||||||
| Log of body mass index (BMI) (kg/m2) | 0.00 | 0.00 | 0.00 | 0.27 | 0.00 | 0.00 | 0.00 | 0.41 | 0.00 | 0.00 | 0.00 | 0.59 |
| Log of waist circumference (cm) | 0.00 | 0.00 | 0.00 | 0.21 | 0.00 | 0.00 | 0.00 | 0.88 | 0.00 | 0.00 | 0.00 | 0.24 |
| Log of grip strength (kg) | 0.00 | 0.00 | 0.00 | 0.59 | 0.00 | 0.00 | 0.00 | 0.90 | 0.00 | 0.00 | 0.00 | 0.51 |
| Systolic blood pressure (mmHg) | 0.02 | -0.01 | 0.04 | 0.14 | 0.00 | -0.03 | 0.03 | 0.97 | 0.03 | -0.01 | 0.06 | 0.16 |
| Diastolic blood pressure (mmHg) | 0.01 | -0.01 | 0.03 | 0.45 | -0.01 | -0.04 | 0.01 | 0.34 | 0.03 | -0.01 | 0.07 | 0.16 |
| High-density lipoprotein (HDL) cholesterol (mmol/L) | 0.00 | 0.00 | 0.00 | 0.48 | 0.00 | 0.00 | 0.00 | 0.89 | 0.00 | 0.00 | 0.00 | 0.98 |
| Total cholesterol (mmol/L) | 0.00 | 0.00 | 0.00 | 0.83 | 0.00 | 0.00 | 0.00 | 0.77 | 0.00 | 0.00 | 0.00 | 0.96 |
| Log of total cholesterol/HDL | 0.00 | 0.00 | 0.00 | 0.63 | 0.00 | 0.00 | 0.00 | 0.71 | 0.00 | 0.00 | 0.00 | 0.84 |
| Glycohemoglobin (%) | 0.00 | 0.00 | 0.00 | 0.91 | 0.00 | 0.00 | 0.00 | 0.10 | 0.00 | 0.00 | 0.00 | 0.29 |
|
Notes: Data are presented as unstandardized regression coefficients for each additional minute outdoors per day. After a Bonferroni adjustment, a was set at p < 0.0055. BMI, waist circumference, grip strength, and ratio total cholesterol/HDL cholesterol were transformed into their natural logarithms. Source: 2012/2013 Canadian Health Measures Survey. |
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